Ask Ubuntu General Room

@Serg The deb only downloads the installation and uninstall scripts -- no sources. This means that we won't have to build the deb again and again for minor changes. It will build from Git each time.

Nathan Osman

Now we're going to go into further debt for who-knows-what-reason.

Zacharee1

hmm

Nathan Osman

12:50 AM

And I'm sure you heard about the incident in Parliament where he elbowed someone, swore, and then happily apologized for it.

Zacharee1

nope

accidentally elbowed?

Nathan Osman

Accidentally my foot.

I'm sure there are videos on YouTube.

Zacharee1

This was the only thing I could find about deficit and debt cbc.ca/news/politics/trudeau-budget-deficit-wherry-1.3495745

ah torontosun.com/2016/03/01/…

I thought "smash" meant "destroy/fix"

Nathan Osman

Does anyone know what package I need in order to get an OpenCL ICD driver for my AMD CPU (not GPU)?

Ask Ubuntu Meta

0

Q: Help.ubuntu.com down/up

I am trying to access help.ubuntu.com and I am getting this message: Internal Server Error The server encountered an internal error or misconfiguration and was unable to complete your request. Please contact the server administrator, [no address given] and inform them of the time th...

discussion

edwinksl

1:01 AM

^dis meta qn doe

Zacharee1

lel

Nathan Osman

1:32 AM

test_ocl_interpolate_flow_count (tests.test_motion.InterpolateFlowTestCase) ... OpenCV Error: Gpu API call (CL_INVALID_OPERATION) in bindTexture, file /build/opencv-SviWsf/opencv-2.4.9.1+dfsg/modules/ocl/src/mcwutil.cpp, line 211
terminate called after throwing an instance of 'cv::Exception'
  what():  /build/opencv-SviWsf/opencv-2.4.9.1+dfsg/modules/ocl/src/mcwutil.cpp:211: error: (-217) CL_INVALID_OPERATION in function bindTexture

Aborted (core dumped)

Nope, that's not the right ICD.

edwinksl

what() lol

Nathan Osman

I need an ICD for using OpenCL on my AMD CPU.

Ubuntu Questions on U&L

0

Q: ssh: permission denied (publickey) after restoring to a backup that was known to work at the time of backup

So I have a few servers set up behind a bastion. I usually hop from bastion -> server A -> server B using agent forwarding. One day I try to log into server B and for no reason apparent to me I gives me: Permission denied (publickey). After fiddling around trying to get it to work I figure I mus...

linux ubuntu ssh networking aws

IanC

uhuu, I was able to set up a virtual network on Virtual Box! :D

now I can learn better about networks in a more safe environment

Nathan Osman

1:49 AM

Cool.

A bridged network?

IanC

internal

@NathanOsman, thought it was better to keep everything separated, since I'm a noob with networks and don't want to screw with my real interface configurations :p

Nathan Osman

Ah.

IanC

so I have 2 virtual machines, both in the virtualbox intnet network, one being the default gateway and the other being just a regular host

it will be good to see protocols in practice :)

Serg

2:08 AM

@NathanOsman is this a good practice to approach installation like Bharadwaj does ?

CodeX

you can download cisco packet tracer if your goal is to only networking

IanC

@CodeX, never heard of it? What is it?

Serg

I mean, if user wants, they could probably wget it themselves. i thought to make deb package for script itself

IanC

I'm looking for the website

CodeX

its an emulator made by Cisco to learn networking .. mainly about routers and switches ..but there is pc too

IanC

2:12 AM

sounds like it's available only for academic use (at least on the official website)

or can anyone register as an administrator?

CodeX

cs.rpi.edu/~kotfid/packettracer/LinuxUbuntu/version%206_2

you can download from there

edwinksl

what does uname -r say for you guys

CodeX

uname -r
4.4.0-31-generic

edwinksl

looks like you guys caught up

CodeX

test

Loreena McKennitt - Tango to Evora [CINEMATIC]

►

Loreena McKennitt - Tango to Evora [CINEMATIC]

►

edwinksl

2:16 AM

This video contains content from UMG, who has blocked it in your country on copyright grounds.

CodeX

bad luck

Moreza - Miss Guitar [CINEMATIC]

►

IanC

@CodeX, thanks bro! I'm downloading it :D

CodeX

you are welcome : ) @lanC

IanC

@edwinksl, I got an answer for my chemistry doubt!! Been trying to return the favour helping some people there too with some answers :)

edwinksl

2:30 AM

@IanC i think you have a typo

in your chem qn

IanC

where?

edwinksl

for the 2-pyridone resonance structures, the one on the left should have 4 pi electrons, not 8 as you said

still non-aromatic

IanC

@edwinksl, there are 2 for each double bond (total: 6) + 2 from the nitrogen free pair

edwinksl

i only see 2 double bonds

IanC

2 on the ring, and one on the oxygen

edwinksl

2:36 AM

the N lone pair doesn't count because it is not sp2 hybridized

as a result, the double bond to O also doesn't count

although last time i did ochem was more than 5 years ago, so all this is based on whatever i can remember ;)

Nathan Osman

@Serg where's the packaging? I missed the link.

IanC

the N lone pair is in a 2pz orbital (the 3 sp2 orbitals are the sigma bonds with carbons and the hydrogen), and it can contribute to the delocalization, so they do count. The free electron pairs on oxygen don't count because on the first case they are both on sp2 orbitals, and on the right one they are on sp3 (the oxygen suffers hybridization and becomes tetrahedrical)

@edwinksl, it is a little confusing, because the same molecule is aromatic in a resonance form, and non aromatic in another, but it's mostly because of the orbitals the electrons are in each form

it's easier to see if you draw the orbitals in a paper

edwinksl

nah

i believe you

IanC

haha, I'm just learning this molecular orbitals theory, to be honest college didn't really teach me much of it

which is among the things that really disappointed me with graduation courses

edwinksl

there is a good reason for that though

and that's because you need good understanding of physical chemistry/quantum mechanics

unfortunately in undergraduate, ochem is typically taught before pchem

Edity

2:44 AM

yawn

edwinksl

anyway you are right about 8, i went to count it again ;)

Edity

what did i miss

IanC

@edwinksl, indeed, but it would be good for them to give you a little more basis to understand the theory. Not going deep on the quantum physics part of it, I mean, it's such an updated and more broad view of organic chemistry

edwinksl

it is difficult to be honest

IanC

but maybe you're right, after all, I went for chemmical enginner, and not chemmistry

edwinksl

2:49 AM

i had this discussion with my classmate back then who took graduate ochem classes that explicitly stated pchem instead of ochem as a prereq

vast majority don't really need to know the MO type stuff

pushing electrons suffices in most cases

but if you would like to know more, certainly take the graduate ochem classes

IanC

yeah, I think you're right

but in other important subjects as well, I think graduation still only scratches the surface, at least around here

I believe graduation courses are better preparing there in US

edwinksl

meh, i think it depends

IanC

(I'm actually following this online course from Illinois college)

edwinksl

you sound like you might want to consider graduate school though

majority of your classmates would likely think they have had enough of college :P

IanC

yeah, most of them just wanted to start working and making some money haha

problem is, I believe there is a immense responsability in the shoulders of an enginner, being unprepared can have catastrophic results

I don't know if I'm overcriticizing college, I just seem some stuff that doesn't fit this responsability I think should come with the title. I've seem people cheating (way too often), unprepared teachers, or prepared ones that didn't care to give a good class

not saying it happens everywhere

Edity

3:00 AM

yay kies

Seth

The ubuntu forums was hacked again?

Edity

@Seth Unfortantly, yes.

They got access to ip adresses names and emails.

Seth

when will they learn not to use VBulletin...

Edity

:P

they said "the hackers were NOT able to access passwords"

edwinksl

what should they use instead?

Edity

3:03 AM

coincidence? I think not.

a firewall.

coded from the ground up

Seth

@edwinksl something not so old and closed source?

Edity

i agree

@Serg o/

Nathan Osman

@Seth s/VBulletin/PHP/

Serg

@NathanOsman OK , here is basically the link to his fork of my repo github.com/bharadwaj-raju/lks-indicator . Essentially , he made a deb package , which will wget zip file of my repository , so that we don't have to rebuild the package

@Edity \o

Nathan Osman

All DEB packages should be self-contained.

Edity

3:09 AM

do I have to get gnome for debian

IanC

folks, I'll go get to bed, have to wake up in less than 6h for work :/

Nathan Osman

Using wget is only a last resort when the package cannot legally be redistributed.

IanC

good night for you all!

Nathan Osman

(Like what Ubuntu does with the Flash player.)

Edity

@IanC good afternoon.. i mean good night

Serg

3:10 AM

@NathanOsman OK , in other words , just wget'ings stuff from deb package is not acceptable. OK, I will have to reject his pull request

Nathan Osman

Well, it's up to you.

Serg

I want everything to be done properly. AFAIU that way is not appropriate

Nathan Osman

There is a special thing you can do too if wget is necessary that doesn't break tools like apt-cacher-ng, etc.

Serg

wget is not necessary , at leat IMHO. It's just one python script ( an app indicator )

@Seth do you have any opinion on this ?

Edity

yolo, deny his pull request

i test the pull request

no work in debian

Seth

3:30 AM

@Serg on what?

Serg

@Seth I'm working on an app indicator. Bharadwaj made a deb package for that, but installation script there is basically just gonna wget the zip file from my repository. Is it acceptable ? I'm leaning towards rejecting the pull request

Seth

@Serg it's a deb package that wget's the actual source?

Serg

@Seth basically yeah github.com/bharadwaj-raju/lks-indicator/blob/master/debian/…

There is tar archive included in the deb file ,though

Seth

well it is entirely up to you as the project maintainer, but that doesn't seem like how debs are supposed to work.

Serg

so I don't see the point of wgetting stuff

Seth

3:34 AM

indeed.

other than trying to always download the latest source, which screws with the deb's versioning.

Seth

3:59 AM

Falcon 9 launch tonight at 9:45PM PST spacex.com/webcast

2

@NathanOsman --^

edwinksl

spacex hype

@Seth you gonna watch?

Seth

if I'm awake.

Serg

What's the mission for ? GPS satellites ?

edwinksl

resupply iss

Edity

4:19 AM

international space station?!?

edwinksl

wut??? askubuntu.com/a/799941/15003

Nathan Osman

4:39 AM

Time to watch the launch...

edwinksl

idneed

Edity

its still early for me and their launching?!?

BLASTOFF!

6 min past?!?

ITS LANDED!

edwinksl

4:54 AM

sick

Edity

I am hidden in the audience

I am getting stepped on

ouch

WE ARE IN THE LAST SHIFT

SOLAR RAYZ UNFURLED

Woo!

WEBCAM STOPPED

--O--

YAY

@NathanOsman CRS-9 HYPE

TF2 Announcer - Victory

►

SmokeDetector

5:53 AM

[ SmokeDetector ] URL-only title, bad keyword in body, bad keyword in title, link at end of body, pattern-matching website in body, pattern-matching website in title: testosteronesboosterweb.com/alpha-tren-and-power-boost-x/ by deatioouojal on askubuntu.com …

Zanna

6:40 AM

@Serg I need 5 upvotes for your 'how can I print special characters' answer

Serg

@Zanna not a very special answer, doesn't deserve that many :)

Zanna

but I didn't know about xclip or that python could do that :)

Edity

wai is my name not processing in this chat

Serg

well now you know ;) xclip is very very useful. I have been doing a lot of things with it. For example, i have this function that just copies any command. I use arrow keys to find command i want and prepend it

Edity

i got a new name]

its a upside down edity with XD

Serg

6:50 AM

$> typeset -f to_clipboard
to_clipboard() {
	xclip -sel clip <<<"$@"
}
$> to_clipboard printf "HelloWorld"
$>

It has issues with quotes though : printf HelloWorld

Edity

ƎpᴉʇʎXD

Zanna

cool ^_^

Edity

think it will be processed overnight...

Byte Commander

8:08 AM

@Serg xsel is better than xclip.

Shorter options save some typing work...

;-)

Serg

8:21 AM

@ByteCommander it's like talking emacs vs vim. Both do the same thing , just differently

Ubuntu Questions on U&L

0

Q: Processor affinity not respected by iperf threads

I'm running iperf in server mode on a Ubuntu box (14.04 LTS). The hardware is quad core with hyper-threading, so I have cores 0-7 available (0 is paired with 4, 1 with 5 and so on). I've set the processor affinity of the running iperf process to use only processors 0,1. I can verify this with t...

ubuntu multithreading cpu-usage hyperthreading

Serg

Libre office is weird as balls : it kept making right click options and selections invisible.

edwinksl

meanwhile i am fighting with the whole import stuff in python

Byte Commander

@Serg Uh... they actually do the same thing the same way, I think, they just call it differently...

edwinksl

am i the only one who doesn't use vim nor emacs

Serg

8:34 AM

@edwinksl switch to export ( there's economics joke somewhere there )

Sigh . . . why do colleges require the weird 1 page margin, Times New Roman crap ? It would be so easy to write ENG 101 papers in vim

Byte Commander

@edwinksl nano FTW

edwinksl

^HERESY

Serg

I used to be a nano guy, until I actually learned to use vim a little

Byte Commander

And what did it improve in contrast to nano?

Serg

speed

blade19899

8:38 AM

How do you restart iptables in Debian 8.5?

Serg

( self-note , i should learn iptables )

Byte Commander

9:19 AM

1

Q: Shouldn't the "recent declined flags" warning go away after clicking the link to review your flag history?

Every time I am currently flagging a post on Ask Ubuntu, I see this warning: Attention: some of your recent flags have been declined - please review them before flagging this post! I understand it is caused by the two declined flags 5 and 6 days ago (>10% of those flags reviewed within the ...

discussion feature-request declined-flags

Did you ever try a reconfuguration invidia vedio card? o.O

Journeyman Geek

o0

Byte Commander

Btw the question this invidia comment links to can be closed as dupe ^

Serg

9:38 AM

@ByteCommander I can make an option for indicator to avoid reporting status of certain keys, probably will have that as a command line option. How's that ? Or should I make it an option via indicator menu

In other news, Ubuntu Mate VM installation complete \ o /

Ubuntu MEOWte

Zanna

ooo ooh so you are purrrfecting my indicator ;)

Serg

@Zanna not yet , I'll net to set everything up first, but yes, that's my intention ^_^

blade19899

Seriously how do you save iptables in Debian 8.5

Zanna

9:55 AM

when you're done can you make me a script that automagically files my tax return? ;)

3

Serg

Em . . . I can script , but I don't know anything about economix or taxes . . . .

my girl just send me a few pics from the park we went to . . . .I so wanna go back :(

Zanna

what park?

Serg

I don't remember it's name, it's like cold springs park . The city we stayed in is famous for its springs and willows

There's even a famous poem about it

Zanna

oh sounds gorgeous

Serg

Well, um . . . Mate doesn't like it apparently

Byte Commander

10:06 AM

@Serg It should still report NUM status, but it should treat "on" for that one as default.

Serg

Byte Commander

eew?

anyway, tank time...

Zanna

haha well that isn't what I get

Serg

If I enable indicators from Mate Tweak , that's what happens. If I don't - it shows the circle normally

Zanna

yeah that 'enable indicators' button seems to be troublesome

i should uncheck that in my own answer...

Serg

10:16 AM

0

Q: What is the difference between appindicator and AppIndicator3

Ubuntu indicators written in python can be done with two APIs : appindicator and AppIndicator3. What is the difference between them and is there any advantage to using one over the other ?

python application-development indicator

If anyone knows , please enlighten this n00b ( aka me )

Byte Commander

@Serg Probably one is Python2 and one Python3?

Serg

@ByteCommander Ubuntu documentation shows example with #!/usr/bin/env python, and in either case they use print function , not print()

So it's python 2 for both

blade19899

Thanks iptables, now a f**ked up the server

Byte Commander

Hmm... :/

Serg

@blade19899 post a question either on AU or U&L . I don't think anyone who is in chat right now knows of iptables.

@_@ . . . .

I need to get my life in order in a year !!! howly mowly

Serg

10:55 AM

@jokerdino do you have any experience with app indicators ?

jokerdino

not by choice, no

Serg

welp, i guess you won't be able to answer my question then

jokerdino

that should be a given

Serg

@Zanna I have good news for you, and sort of blah news for me. I can display indicator text in Mate using AppIndicator3 library. That's good news for you. The blah news for me is that I have to rewrite my indicator using different library :p Which shouldn't be complicated , I hope

Zanna

haha I hope it's really easy

jokerdino

11:11 AM

code in middle of the night = epic

Serg

IT's actually 5:12 am already, not middle of the night

karthick87

Hey all, after a long looking in here :) how's things?

Serg

AttributeError: When using gi.repository you must not import static modules like "gobject". Please change all occurrences of "import gobject" to "from gi.repository import GObject". See: bugzilla.gnome.org/show_bug.cgi?id=709183

what ???

blade19899

F**k this Monday

Zanna

well I can't complain since I've got @Serg making nice toys for me (and the sun is shining too)

blade19899

11:14 AM

How do you enable networking in debian 8.5. Can't ping google.com... Via the debian server

Serg

Maybe you should just get rid of debian . . . I've heard stability isn't their best attribute

blade19899

@Serg Lol. I just don't have that much experience with Debian.

Must they redefine everything

Serg

Segmentation fault . . . .Welp , I bricked my indicator

Tomorrow will be a long day of fixing it

Zanna

the linked page says: "I'm pretty sure the problem is along the lines of not being able to import gtk2 and gtk3 into the same process due to symbol conflicts. I think the only potential fix here would be to have "from gi.repository import Gdk" clobber sys.modules['gobject/gdk/gtk'] that when used, gives an exception which is more helpful than a segfault."

Serg

GOT DAMN YOU PYTHON3 , why do you have issue with tabs vs spaces ?

yeah, i changed my import gtk to "from gi.repository import Gtk as gtk"

Zanna

11:22 AM

>_<

Serg

welp, @blade19899 I already agree with you . Fsck this monday

Byte Commander

@Serg Just use a proper IDE.

Btw, real programmers use spaces...

Serg

real programmers use sed -i 's/\t/\ \ \ \ /g' python_file.py

Zanna

hahaha I'm sorry I destroyed your indicator

Byte Commander

or that

Serg

11:29 AM

  File "lock_keys_status.py", line 92, in key_status
    for line in self.run_cmd(['xset', 'q']).split('\n') :
TypeError: a bytes-like object is required, not 'str'

@Zanna you didn't destroy anything, i just have to switch to tools that i don't even know how to use right now

Zanna

:) the indicator adventure continues

Serg

Got it working. This is why we can't have nice things : we had python2 , now python3 comes with its crap. self.run_cmd(['xset', 'q']).split('\n') has to be self.run_cmd(['xset', 'q']).decode().split('\n')

Why decode ???

Ah . . . unicode strings . . . .except where there is no need for frickin unicode

And on that jolly note, i leave

\o

jokerdino

bai

Byte Commander

@Serg It's not unicode, its bytes vs. str.

You could have split by a b"\n" probably instead.

cl-netbox

11:45 AM

@ƎpᴉʇʎXD a perfect example for what ?

Casper LI

How to fix ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknow-block(0,0)]?

Zanna

idk @CasperLI Kernel bug I think - I guess you got a kernel update? Boot the old kernel (from grub menu) if you can and report a bug against the new kernel. That's what I would do.

Casper LI

12:02 PM

I try to reinstall the os by using bootable USB but the reinstall option doesn't exist =[.
http://www.howtogeek.com/196740/how-to-fix-an-ubuntu-system-when-it-wont-boot/

Ubuntu Questions on U&L

12:25 PM

0

Q: Unable to execute backup commands in a Virtual Tape Library

I have created a virtual tape library with mhVTL based on the steps given in this link. When i try to list the tapes with lsscsi -g that are mounted it showed. [0:0:0:0] disk ATA ST750LM022 HN-M7 2AR2 /dev/sda /dev/sg0 [1:0:0:0] cd/dvd hp DVD A DS8A9SH EH62 /dev/sr0 ...

ubuntu backup tar tape

Zanna

I don't think you should reinstall. can you boot the previous kernel? there are lots of bugs like this on Launchpad - seems to be usually fixed quickly by an update

Byte Commander

12:43 PM

this seems very generic blah blah: askubuntu.com/a/800054/367990 NAA?

Zanna

maybe... imo that question should be closed as too broad... bad question invites bad answer

jokerdino

who brought the site down?

wow...

Sorry!

what? it was you?

12:52 PM

Shhhhh

Oli

1:05 PM

@Zanna Submitting it is easy. Submitting it accurately is the difficult bit.

Zanna

@Oli this is correct, but I'll worry about that when I get audited ^_^

karthick87

Hey @Oli how are you doing?

# cat users.txt | xargs userdel -r

If someone is familiar with xargs, help me out.. I am trying to remove to list of users using xargs.. I have added usernames one per line in a file.. and executing a command like this to remove those users in the file.. But it doesn't work..

terdon

1:29 PM

@karthick87 while read user; do sudo userdel -r "$user"; done < users.txt

Although your xargs should have worked. What happened when you tried it?

karthick87

@terdon thank you that helped.. By the way the problem with xargs is also sorted out. The issue is userdel expects a single login name to be passed, but xargs passes all of them on a single command line.

terdon

@karthick87 Yes, if you run it that way, it will. You need to use -P or -n if I remember correctly. I almost never use xargs though.

karthick87

@terdon you are right, I have did like this "cat users.txt | xargs -n1 userdel -r" and it worked.

terdon

Yep

Ubuntu Questions on U&L

0

Q: Configuring Tripwire on multiple hosts on one report

I have set up Tripwire on one of my servers but would like to implement the same policy to run on multiple hosts. I would ultimately like to configure them so they all report to one email. Is this possible? I have can't seem to find any documentation online to do this, any suggestions?

ubuntu tripwire

Zacharee1

1:48 PM

Mac askubuntu.com/questions/800086/…

Transcript for